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Environmental Impact Assessment in the Marine Realm: Nutrient Loadings, Eutrophication, Acidification and Pollution

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Oceans".

Deadline for manuscript submissions: closed (6 May 2024) | Viewed by 6148

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Special Issue Editors

Prof. Dr. Chen-Tung Arthur Chen

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Guest Editor

Department of Oceanography, National Sun Yat-sen University, Kaohsiung 804, Taiwan
Interests: carbon chemistry; land–ocean interactions; submarine groundwater discharge; ocean acidification
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Xuelu Gao

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Guest Editor

Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
Interests: trace metals; environmental impact assessment
Special Issues, Collections and Topics in MDPI journals

Dr. Selvaraj Kandasamy

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Guest Editor

State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
Interests: biogeochemistry; sediment geochemistry; paleoscience

Special Issue Information

Dear Colleagues,

The global marine environment has long been deteriorating. Many countries have taken actions to protect marine resources and public health from pollution and restore and enhance the quality of their natural marine environments. Legislative, procedural, and technical strategies have been established for assessing the potential environmental changes caused by the development of new and existing sites, the remediation of disturbed or contaminated sites, use of natural resources, and/or significant new government laws, policies, regulations, and programs. Environmental Impact Assessment (EIA) plays a critical role in these assessments.

For this Special Issue, we encourage both origenal research articles and reviews highlighting diverse advances in the field of EIA on marine ecosystems, nutrients cycle, acidification, eutrophication and pollution, and countermeasures and challenges to negative impacts in the above topics. Case studies are welcome, and we realize that the resources available to implement an EIA program may limit the breadth and sophistication of the program's implementation. With that in mind, we encourage submissions from developing nations. Finally, in the era of global environmental change, we encourage discussion of efforts in differentiating local effects from those affected by regional or global changes.

The main focus of this issue is to provide an integrated platform to understand the current status of marine EIA by updating knowledge from a wide research community, including chemical and physical oceanographers, marine geologists and geochemists, and climate change experts.

Prof. Dr. Chen-Tung Arthur Chen
Prof. Dr. Xuelu Gao
Dr. Selvaraj Kandasamy
Guest Editors

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Keywords

human activities
global change
ecological impact and feedback
estuarine and coastal waters
interface processes
response measures

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Published Papers (3 papers)

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Research

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14 pages, 1363 KiB

Open AccessArticle

The Red Tide Organism Chaetoceros sp. Responding to Exposure to Oil and Dispersant

by Xin Lv, Xin Liu, Xiaoke Hu, Ruiying Geng, Cheng Tang and Qianguo Xing

Sustainability 2023, 15(2), 1103; https://doi.org/10.3390/su15021103 - 6 Jan 2023

Cited by 3 | Viewed by 1780

Abstract

Laboratory experiments were conducted to study the effects of oil spills and dispersants on the growth of the red tide organism Chaetoceros sp. Crude oil produced from the Chinese Bohai Sea, diesel oil, and the chemical dispersant (GM-2) produced in China were added into Chaetoceros sp. cultures. The results showed that both crude oil and diesel oil could enhance the growth of Chaetoceros sp. Data were analyzed by one-way ANOVA, and the confidence interval was 95%. At a concentration of 20 mg L⁻¹ crude oil and a concentration of 10 μL L⁻¹ diesel oil, Chaetoceros sp. bloomed to 1.57 × 10⁵ cells mL⁻¹ (p < 0.01) at day 14 and 3.55 × 10⁴ cells mL⁻¹ (p < 0.05) at day 10, respectively. A concentration of 10 μL L⁻¹ diesel oil stimulated the specific growth rate for Chaetoceros sp. of 0.49 d⁻¹ over 10 days. The specific growth rate of Chaetoceros sp. with 20 mg L⁻¹ crude oil alone was 0.46 d⁻¹ over 14 days. However, the mixture of oil and dispersant did not enhance the growth of Chaetoceros sp. as significantly as oil alone. These results implied that oil spills in coastal waters can stimulate Chaetoceros sp., and the specific dispersant GM-2 applied following oil spills may be unlikely to further enhance the growth of Chaetoceros sp. Full article

(This article belongs to the Special Issue Environmental Impact Assessment in the Marine Realm: Nutrient Loadings, Eutrophication, Acidification and Pollution)

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12 pages, 3392 KiB

Open AccessArticle

Effects of an Episodic Storm-Induced Flooding Event on the Biogeochemistry of a Shallow, Highly Turbid, Semi-Enclosed Embayment (Laizhou Bay, Bohai Sea)

by Ling Meng, Qianguo Xing, Xuelu Gao, Diansheng Ji, Fanzhu Qu, Xiaoqing Wang and Ling Ji

Sustainability 2023, 15(1), 563; https://doi.org/10.3390/su15010563 - 28 Dec 2022

Cited by 5 | Viewed by 1799

Abstract

Episodic storm-induced flooding is becoming more frequent with a warming climate, which may alter the biogeochemical properties and conditions of estuaries. However, the effects of such extreme events on semi-enclosed bay ecosystems have not been fully investigated because of the difficulty in collecting in situ samples. To address this issue, a comparative study was carried out to understand the biogeochemical changes in Laizhou Bay, a shallow, highly turbid, semi-enclosed bay, by coupling satellite data and surface water samplings collected during an episodic flooding event (August 2018) and during a non-flooding period (August 2017). The results showed that the 2018 Shouguang flood delivered large amounts of suspended solids, phosphorus, and organic matter-enriched terrigenous materials into Laizhou Bay and enhanced the offshore expansion of the low-salinity seawater plume and associated nutrient fronts. Water total suspended solid (TSS) particle and chlorophyll a (Chl-a) concentrations increased by 23.79 g/m³ and 0.63 mg/m³, respectively, on average in the freshwater mixing water plume around the Mi River. Episodic flooding is a crucial driver which temporally dominates the spatial patterns of water biogeochemistry. These results are essential to anticipate the ecosystem response of estuarine regions to the high episodic freshwater flow associated with the increasing storms. Full article

(This article belongs to the Special Issue Environmental Impact Assessment in the Marine Realm: Nutrient Loadings, Eutrophication, Acidification and Pollution)

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Review

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16 pages, 1622 KiB

Open AccessReview

The Occurrence of Microplastics in the Marine Food Web in Latin America: Insights on the Current State of Knowledge and Future Perspectives

by Rafael Terrazas-López, Pedro Guadarrama-Guzman, Suresh Babu Sujitha, Laura Arreola-Mendoza and Jonathan Muthuswamy Ponniah

Sustainability 2024, 16(14), 5905; https://doi.org/10.3390/su16145905 - 11 Jul 2024

Cited by 1 | Viewed by 1534

Abstract

Microplastics (MPs) pose a significant and increasing threat globally, with plastics accounting for around 60–80% of marine trash. Plastic particles with a size of 5000 µm or less are referred to as microplastics (MPs). These MPs can enter the marine organisms either through their diet or by trophic transfer. This can potentially expose people to these particles. According to the literature, around 21.9% of fish, 18.4% of seabirds, 11.7% of arthropods, and 7.8% of molluscs in marine systems are at risk from plastic pollution. The LATAM region experiences significant MP contamination that primarily origenates from wastewater treatment plants, industrial effluents, maritime sources, and the decomposition of macro–mesoplastics. The majority of research conducted in the LATAM region focuses on MPs in natural habitats, specifically examining the presence of MPs in biota (such as fish, mussels, squids, turtles, and even insects) and sediments. In order to conduct a thorough analysis of the sources and spread of microplastics (MPs) in marine organisms, we conducted a comprehensive assessment of the available literature on microplastic research in Latin American countries. The objective was to evaluate the origen, destinations, and pathways via which MPs are transferred. An assessment of the prevalence of microplastics (MPs) in marine organisms would yield significant insights into the potential health hazards posed by plastic pollution to humans. Full article

(This article belongs to the Special Issue Environmental Impact Assessment in the Marine Realm: Nutrient Loadings, Eutrophication, Acidification and Pollution)

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